616546628 has 12 divisors (see below), whose sum is σ = 1079154300. Its totient is φ = 308216832.

The previous prime is 616546621. The next prime is 616546657. The reversal of 616546628 is 826645616.

It can be written as a sum of positive squares in 2 ways, for example, as 350138944 + 266407684 = 18712^2 + 16322^2 .

It is not an unprimeable number, because it can be changed into a prime (616546621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19148 + ... + 39996.

It is an arithmetic number, because the mean of its divisors is an integer number (89929525).

Almost surely, 2^616546628 is an apocalyptic number.

It is an amenable number.

616546628 is a deficient number, since it is larger than the sum of its proper divisors (462607672).

616546628 is a wasteful number, since it uses less digits than its factorization.

616546628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28246 (or 28244 counting only the distinct ones).

The product of its digits is 414720, while the sum is 44.

The square root of 616546628 is about 24830.3569849489. The cubic root of 616546628 is about 851.1157794479.

The spelling of 616546628 in words is "six hundred sixteen million, five hundred forty-six thousand, six hundred twenty-eight".